PARIS — To celebrate the opening of its new permanent collection and its new enlarged exhibition space, the Pinacoth è que de Paris is offering a double-header of a temporary show, "The Birth of a Museum," with works from two historic private collections that provided the foundations for two important museums: the Romanov Collection at the Hermitage in Saint Petersburg and the Esterh á zy Collection at the Beaux-Arts in Budapest.

•Those clever meta-folks at Supernatural (CW, 8 ET/PT) tweak TV conventions again in the first of tonight's double-header as the boys get a visit from a teen who claims to be a previously unknown, long-lost brother.